Ringing Rocks Park, Bucks County, Pennsylvania

Ringing Rocks Park is a 128 acre park nestled in the woods in Upper Black Eddy. Located within the park is a field of boulders, about 7-8 acres in size, that have an unusual property. When the rocks are struck with a hammer or another rock, they sound as if they are metal and hollow and ring with a sound similar to a metal pipe being struck.

(via Atlas Obscura, follow link above for video/audio samples)

“I wired the gallery with 13 microphones, each set in a resonating tube tuned to a note of the diatonic scale. The viewer would put on headphones and play a tune on an antique keyboard, in which each note was made of filtered sound from elsewhere in the gallery.”

(via moonmilk)